Ok, I was being over zealous. Yes it matters to increase participation, which helps balance shards. I guess I meant it shouldn’t matter to a WPvPer. But I know not everyone is there to WPvP.
On normal shards, outnumbered bonus for Alliance helps the shard manager do its job.
On RP shards, well, nothing is likely to change in this expansion. Like I said, maybe next one.